http://www.xys.org/xys/ebooks/others/science/dajia11/xiaochuanguo168.txt
Eric Kurzrock, chief of pediatric urology at the University of
California, Davis, Children’s Hospital in Sacramento, California,
says Xiao’s study is “extremely flawed” because of “patient
selection bias.” Kurzrock is particularly critical of the claimed
high success rate, because it is not based on data from a randomized,
controlled trial.